While he appeared in guest spots throughout the show’s first three seasons, Hamill has been a no-show in season 4 so far. You might have thought that this was to do with the actor being too busy with Star Wars: The Last Jedi, but it turns out he’s just waiting for the call to be asked back. Here’s what he told ComicBook.com while in attendance at the Aarp Movies for Grownups Awards:
“Who knows? They haven’t asked yet. They asked me once, and I agreed, but John was doing a play – John Wesley Shipp.